WaystoDealwiththeProblemofEner-优题课

Sports medicine experts have observed for years that athletes such as long distance runners, especially women athletes, often display a lack of iron. Now a new study by a team of Purdue University researchers suggests that even moderate exercise may lead to reduced iron in the blood of women.
"We found that women who were normally inactive and then started a program of moderate exercise of middle degree showed sings of iron loss," says Roseanne M. Lyle, associate professor at Purdue. Her study of 62 formerly inactive women who began exercising three times a week for six months was published in the journal Medicine & Science in Sports & Exercise.
Iron deficiency is very common among women in general, affecting one in four female teenagers and one in five women aged 18 to 45, respectively. But the ratio is even greater among active women, affecting up to 80 percent of female endurance athletes. This means, Lyle says, that "too many women ignore the amount of iron they take in". Women of child-bearing age are at greatest risk, since their monthly bleeding is a major source of iron loss. Plus, many health-conscious women increase their risk by rejecting red meat, which contains the most easily absorbed form of iron. And because women often restrict their diet in an effort to control weight, they may not consume enough iron-rich food, and are liable to experience a deficiency.
Exercise can result in iron loss through a variety of mechanisms. Some iron is lost in sweat, and, for unknown reasons, intense endurance exercise is sometimes associated with bleeding of the digestive system. Athletes in high-impact sports such as running may also lose iron through a phenomenon where small blood vessels in the feet leak blood.
There are three stages of iron deficiency. The first and most common is having low iron reserves, a condition that typically has no symptoms. Fatigue and poor performance may begin to appear in the second stage of deficiency, when not enough iron is present to form the molecules(分子) of blood protein that transport oxygen to the working muscles. In the third and final stage, people often feel weak, tired, and out of breath - and exercise performance is severely compromised.
"People think that if they're not at the third stage, nothing is wrong, but that's not true," says John L. Beard, who helped design the Purdue study. "You're not stage 3 until your iron reserves go to zero, and if you wait until that point, you're in trouble."
Beard and other experts say it’s advisable for people to have a yearly blood test. If iron levels are low, talk with a physician to see if the deficiency should be corrected by changing your diet and taking iron-rich foods or by taking iron-added pills.
“Select breads and cereals with the words ‘iron-added’ on the label,” writes sports diet expert Nancy Clark. “This added iron supplements the small amount that naturally occurs in grains.” Clark also recommends cooking in iron pans, as food can obtain iron from the pan during the cooking process.
64．Which of the following may be the title for the passage?

A．Science, sports and exercise

B．Correct iron deficiency

C．Women, Iron and exercise

D．Women, health and exercise

65．The third paragraph is developed mainly by .

A．organizing the details according to the order of time

B．presenting the result followed by specific causes

C．beginnign with details followed by a general statement

D．making comparisons ad contrasts

66．What does it mean when you are in the third stage of iron defieiency?

A．Nothing serious though you don’t have much iron stored in the body.

B．There is not enough iron to form the molecules of blood protein to transport oxygen.

C．The small blood vessels in your reet are beginnig to leak blood.

D．No iron is ldft in your body and you would be in trouble without urgent measures.

67．What is the writer’s attitude in writing this passage?

A．Defensive.

B．Persuasive.

C．Supportive.

D．Objective.

Three armed robbers stole two Pablo Picasso prints from an art museum in downtown Sao
Paulo on Thursday, which was the city’s second high-profile art theft in less than a year. The bandits also took two oil paintings by well-know Brazilian artists Emiliano Di Cavalcanti and Lasar Segall, said Carla Regina, a spokeswoman for the Pinacoteca do Estado museum.
The Picasso prints stolen were "The Painter and the Model" from 1963 and "Minotaur, Drinker and Women" from 1933, according to a statement from the Sao Paulo Secretary of State for Culture, which oversees the museum. The prints and paintings have a combined value of $612,000, the statement and a museum official said.
About noon, three armed men paid the $2.45 entrance fee and immediately went to the second-floor gallery where the works were being exhibited, bypassing more valuable pieces, authorities said. "This indicates to us that they probably received an order" to take those specific works, Youssef Abou Chain, head of Sao Paulo's organized crime unit, told reporters at a news conference. The assailants overpowered three unarmed museum guards and grabbed the works, officials said. The robbery took about 10 minutes and the museum was nearly empty at the time. The assailants took the pieces — frames and all — out of the museum in two bags. The institution has no metal detectors.
In December, Picasso's "Portrait of Suzanne Bloch" and "O Lavrador de Cafe" by Candido Portinari, an influential Brazilian artist, were stolen from the Sao Paulo Museum of Art by three men who used a crowbar（铁撬棍）and car jack to force open one of the museum's steel doors. The framed paintings were found Jan. 8, covered in plastic and leaning against a wall in a house on the outskirts of Sao Paulo, South America's largest city. One of the suspects in that robbery — a former TV chef — turned himself over to police in January, who already had two suspects in custody（监禁）.
What did the armed men steal on Thursday?

A．Two prints by Pablo Picasso

B．Two oil painting by Brazilian artists

C．Two prints by Pablo Picasso and two oil paintings by two Brazilian artists.

D．Two prints by two Brazilian artists and two oil paintings by Picasso Pablo.

Why didn't the thieves take other more valuable works?

A．Because they didn't know that the other pieces were worth more.

B．Probably because they had received an order for the prints that they took.

C．Because they didn't have enough time.

D．Because they were in such a hurry that they couldn’t get them all.

How many people were in the museum during the robbery?

A．A lot. The museum was crowded.

B．Not too many. It was almost empty.

C．There were a lot of people outside the museum.

D．Only three of them.

According to the passage, which of the followings is TRUE?

A．In December, "Portrait of Suzanne Bloch" and "O Lavrador de Cafe" painted by Candido
Portinari were stolen.

B．There are steel doors and no detectors in Sao Paulo Museum of Art.

C．Three robbers defeated three armed museum guards and took away the works on Thursday.

D．Three suspects in the first high-profile art theft in less than a year were arrested.

China news, Beijing, Feb. 9 – Housing price in China has always aroused heated discussions among property developers（房产开发商）and ordinary Chinese. To many property developers and local government officials, housing price in China is still low compared with many developed countries. However, the average housing price in the United States is only 8,000 yuan per square meter, while in China, it is even higher than in the United States. This shows that there are some bubbles(泡沫) in Chinese real estate market, the International Finance News reported.
Although the average price of residential houses in the United States, after converted（转换）to Renminbi, is about 8,000 yuan per square meter, the houses in US are not sold in terms of building area, as most Chinese property developers do when they sell their houses. If US property developers sell their houses according to the building area, then the housing price will be even lower than 8,000 yuan per square meter. In most big Chinese cities, such as Beijing, Shanghai, and Shenzhen, houses are sold a t a price even higher than those in the US.
The high housing sales price in large cities in China proves that Chinese real estate（房地产）market does have some bubbles. Moreover, Chinese houses can not be compared with houses in US in terms of building quality, environment and supporting facilities. Furthermore, it should be noted that American people’s average income is several dozen times higher than that of Chinese people. How can the Chinese afford to buy a house which is even more expensive than that sold in US?
At the beginning of 2007, Chinese government issued a set of policies that aimed to benefit the public. Now in order to reduce the high housing prices, the government can regulate (控制) the real estate market by raising tax on property industry and controlling the release of loans（贷款）and lands to property developers. At the same time, the government should allow people to build more houses through various fund-raising channels, such as funds collected from buyers or raised by working units. By applying these multiple means, it is expected that the high housing prices can be lowered.
What is the average housing price per square meter in China?

A．8000 yuan.

B．10000 yuan.

C．7000 yuan.

D．it’s not mentioned here.

Which of the following does NOT support the idea that the average housing price in China is even higher than in the United States?

A．Chinese houses can not be compared with houses in US in terms of building quality, environment and supporting facilities.

B．American people’s average income is several dozen times higher than that of Chinese
people.

C．The houses in US are not sold in terms of building area, as most Chinese property
developers do when they se

ll their houses.

D．There population who need houses in China than in the United States.

How many measures are mentioned in the last paragraph in order to reduce the high housing prices?

A．Four.

B．Three.

C．Tow.

D．One.

What is the main idea of this passage?

A．The housing price in China is so high that the government should do something useful to
prevent it.

B．There are some bubbles in Chinese real estate market.

C．The average housing price in China is even higher than in the United States.

D．Th

e Chinese government issued a set of policies that aimed to benefit the public.

JAMES Brown, the legendary US singer known as the “Godfather of Soul”, died Christmas morning, 2006. he was 73.
Brown was one of the major musical influences of the last
50 years. He provided the basis for much of black music and
most of pop music with his early hits like. “Please, Please,
Please”. He essentially created funk（“疯客”音乐）with
mid-1960s songs such as "Papa's Got a Brand New Bag".
It won him a Grammy Award as best rhythm-and-blues song,
and it was only the beginning of Mr. Brown's rhythmic
breakthroughs. His rapid-footed dancing inspired Michael Jackson and Prince. Rap stars of recent years, such as Fat Boys and Public Enemy, have all borrowed his lyrics and rhythms.
Brown's songs in the late 1960s and early 1970s, such as "Hot Pants" and "Make It Funky", mixed the sophistication(复杂) of jazz-style arrangements with raw funk. With these songs, Brown established himself as the godfather not just of soul, but of all subsequent styles of dance music: funk, disco, hip hop.
"He made soul music a world music," said Al Sharpton, who toured with Brown in the 1970s and imitates his hairstyle to this day. "What Brown was to music in terms of soul and hip hop, rap, all of that, is what Bach(巴赫, 德国作曲家) was to classical music. He put everybody on a different beat, a different style of music."
Amid the civil rights movement of the 1960s Mr. Brown used his fame and music for social messages. He released "Don't Be a Dropout" in 1966 and met with Vice President Hubert H. Humphrey to promote a stay-in-school initiative. Two years later "Say It Loud - I'm Black and I'm Proud" insisted, "We won't quit movin' until we get what we deserve."
The passage is mainly about _______.

A．black music in the US

B．James Brown's unique music styles

C．James Brown's contribution to American music

D．great musicians in the US in the last 50 years

The author intends to tell us by the last paragraph that ______.

A．James Brown was proud of being a black

B．James Brown was also active in political movements

C．the then Vice President Hubert H. Humphrey was one of Brown's fans

D．no children dropped out of school because of James Brown's social influence

Which of the following indicates that Brown's career began to take off?

A．His rapid-footed dancing.

B．His three years in prison.

C．His tour around the country with Al Sharpton.

D．His mid-1960s songs such as "Papa's Got a Brand New Bag".

James Brown has influenced all American music types EXCEPT ______.

A．classical music	B．rhythm-and-blues
C．Rap	D．hip hop

Autumn means different things to different people. It all depends on your personality, said British naturalist Richard Mabey. "Personality shapes your view of the season," he said. "You may see it as a fading away, a packing up（结束）, or as a time of packing in another sense – the excited gathering of resources before a long journey."
If this is true, perhaps it tells us a little about, for instance, Thomas Hood, the 19th Century English poet. About November, he wrote:
No warmth, no cheerfulness, no healthful ease
No shade, no shine, no butterflies, no bees
November!
On the other hand, another English poet John Keats, already sensing he was seriously ill, was inspired by a late September day to pen one of the most famous poems in the English language, To Autumn. He wrote to a friend afterwards that there was something comforting and healing about it.
According to Richard Mabey, Keats has the biological evidence on his side. Autumn is not a time of slowing down, but a time of new beginnings and great movements of creatures. For example, just at the moment that Keats's "gathering swallows" （in To Autumn） are departing for Africa, millions of creatures are fleeing from the frozen north like Iceland, Greenland and Russia to winter along the east and south coasts of Britain. According to scientists, before falling, the leaves transfer their chlorophyll（叶绿素） and carbohydrates into the woody parts of the tree for safe-keeping over winter. What remains are the natural antioxidants（防老剂） in the leaves: the yellow and orange carotenoids（类胡萝卜素）, and another protective chemical specially produced for autumn, the bright-red anthocyanin（花青素）. High color is not a signal of deterioration（退化） and decline, but of detox（排毒的） ability and good health.
A century after Keats, the American poet Loren Eiseley wrote in his journal: "Suppose we saw ourselves burning like maples in a golden autumn. [And that we could] disintegrate（瓦解） like autumn leaves…dropping their substance like chlorophyll. Would not our attitude towards death be different?"
From Thomas Hood’s poem, we may infer that _______.

A．he suffered a lot from cold November

B．he missed the shining summer days very much

C．he had a negative attitude towards autumn

D．he enjoyed butterflies and bees very much

Which word can best describe Loren Eiseley’s attitude towards autumn?

A．Optimistic.

B．Fearful.

C．Doubtful.

D．Realistic.

In autumn, leaves turn yellow before falling because ______.

A．they can’t bear the freezing

B．they can’t get enough water from the wood part

C．chlorophyll and carbohydrates have been lost through leaves

D．chlorophyll and carbohydrates have come back to the wood part

What does the underlined sentence mean?

A．Man can never live long, just as leaves must leave the tree annually.

B．Man is different from autumn leaves, which will come again the next spring.

C．Man should treat death calmly, just like autumn leaves fall to the ground.

D．Man should have a positive attitude towards death, quite different from autumn leaves.

A．renewable source	B．underground source
C．heat inside the earth	D．temperature of the earth